Inconsistency-Avoidance Tendency
Updated 2026-08-11
INTRODUCTION
English translation pending.
CORE DEFINITION
Inconsistency-avoidance tendency is one of the psychological tendencies Charlie Munger catalogues in Poor Charlie's Almanack: the brain resists changing conclusions, habits, and commitments it has already made, and unconsciously filters out information inconsistent with them. Munger compares it to the egg locking out all further sperm once one has entered. The tendency is strongest where the prior commitment was public and costly to make, since abandoning it then carries a social as well as a cognitive price.
SCAFFOLDING EFFECT
Reduce cognitive load
- Pre-commitment audit: before stating a position publicly, write what evidence would prove it wrong - Expiry date: attach a review date to important conclusions so commitment cannot become permanent - Cost splitting: separate changing your mind from admitting that you were wrong earlier
Anchor fast decisions
Consistency is reinforced because it saves cognitive cost: once a conclusion is formed and publicly committed to, it need not be rederived each time, and behaviour becomes predictable and therefore easier to coordinate. The same economy has a price, because the mind begins treating information that conflicts with the settled conclusion as noise, so the conclusion drifts away from the evidence. The more public and costly the commitment, the stronger the pressure to stay consistent and the stronger the counter-evidence needed to correct it.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- mungermodels.comhttps://mungermodels.com/models/inconsistency-avoidance-tendencyverified
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